Question
How many molecules of SO2 are present in 11.2 L at STP?
✓
Answer
1 mole of SO2 at STP has volume = 22.4L which contains 6.022 × 1023 molecules.
$11.2\text{L of }\text{SO}_2\text{ contains}\frac{6.022\times10^{23}}{22.4}\times11.2$
$=3.011\times10^{23}\text{ molecules.}$
$11.2\text{L of }\text{SO}_2\text{ contains}\frac{6.022\times10^{23}}{22.4}\times11.2$
$=3.011\times10^{23}\text{ molecules.}$
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